Most of our trips have been to SP's in NC, VA & SC.  NC DMV offers a license plate specifically for the State Parks.  Yesterday I ordered a variant of the following for the truck.  (I'd show you what I got but since it's now reserved and I forgot to copy the actual design beforehand, this will have to suffice)

[IMG]http://i211.photobucket.com/albums/bb265/yobtya1/DrawPlate.jpg[/img]
Only mine will show 2 GO
And this is the Roamers
[img width=640 height=480]http://i211.photobucket.com/albums/bb265/yobtya1/78%20Apache%20Roamer/togobx.jpg[/img]

Cool, eh?